MonteQuest wrote:In 2004, when I first started posting, modern renewables share of the pie was .9%. Now it's 1.45%. And this is despite an utterly massive growth in investment and generating capacity over those 11 years.
Given the massive size of the installed capacity of the global power grid, the long life of power plants, and the miniscule starting share of modern renewables, I don't think taking newly installed capacity and comparing it to how much of total energy is generated by it is a very good way to measure. If you did this for newly installed fossil fueled generators or nuclear I think they would also garner a tiny share of the overall energy pie when measured this way. If your goal is to see if renewable capacity additions are larger now then they were in 2004, I think there is a better way to measure that. You can look at the share of
new capacity that renewables took in 2004 vs the share of
new capacity renewables took in 2015. The closest data I found was for 2005 and 2013. Starting in 2013, renewables passed fossil fuels in new annual capacity. Also, more capacity was added in 2013 in just renewables than all of the capacity additions made in 2005 combined(fossil fuels, nuclear, renewables). This sounds like progress to me. So we are no longer talking about just incredible growth rates from small values. Renewables now represent the majority of new capacity additions.
2005 power capacity additions(in GW)
renewable:______
35 GWnon renewable:_ 104 GW
total:___________
139 GWtotal renewable share of new capacity additions 2005: 25.2%
2013 power capacity additions(in GW)
renewable:_____
143 GWfossil fuel:______ 141 GW
total(ex nuclear): 284 GW
total renewable share of new capacity additions 2013: 50.4%
In the 8 years from 2005 to 2013, renewables have doubled their share of new generating capacity going from 25% share to over 50% share
MonteQuest wrote:A study commissioned by the Renewable Energy Foundation has found that the economic life of onshore wind turbines could be far less than that predicted by the industry. By 10 years of age, the report found that the contribution of an average windfarm towards meeting electricity demand had declined by a third. That reduction in performance led the study team to believe that it will be uneconomic to operate windfarms for more than 12 to 15 years, not 20 to 25 years.
That report originated from an anti-wind lobby group. The "renewable energy foundation" in their name is a deception, they exist to undermind renewable energy:
They are not a Foundation for Renewable Energy, as their name says and as any reasonable person would conclude from their name – they actually exist to undermine Renewable Energy – in that respect their name is a deceit."
Other critics such as Maria McCaffery, chief executive of RenewableUK, a trade body that represents more than 600 wind and marine energy firms, says the Renewable Energy Foundation's true purpose is diametrically opposed to the interests of the wind energy industry. "It is an anti-wind lobbying organisation," she told BusinessGreen. "I'd like to know where the renewable energy part of their remit is. They don't foster or promote or develop, they just try to undermine the case for wind energy all the time."
In 2011 it was revealed that it had been in discussion in April 2008 with the Charities Commission about its possibly overly political nature.
Renewable Energy FoundationA real report found that turbines did last their 25 year lifetimes, not the 12-15 claimed in the report:
There has been some debate about whether wind turbines have a more limited shelf-life than other energy technologies. A previous study used a statistical model to estimate that electricity output from wind turbines declines by a third after only ten years of operation.
In a new study, researchers from Imperial College Business School carried out a comprehensive nationwide analysis of the UK fleet of wind turbines. They showed that the turbines will last their full life of about 25 years before they need to be upgraded. The team found that the UK’s earliest turbines, built in the 1990s, are still producing three-quarters of their original output after 19 years of operation, nearly twice the amount previously claimed, and will operate effectively up to 25 years. This is comparable to the performance of gas turbines used in power stations.
The study also found that more recent turbines are performing even better than the earliest models, suggesting they could have a longer lifespan. The team says this makes a strong business case for further investment in the wind farm industry.
New research blows away claims that ageing wind farms are a bad investment